/Engine/Source/Editor/GraphEditor/Public/ConnectionDrawingPolicy.h
virtual void DrawSplineWithArrow ( const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) & StartGeom, const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) & EndGeom, const [FConnectionParams](API\Editor\GraphEditor\FConnectionParams) & Params )